I've come across a minor annoyance demonstrated by this code snippet:

my ($a, $b, $c, $d) = 'abcd' =~ /(w)(x)(y)(z)/;
print "$a $b $c $d";

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Running this results in a bunch of "Use of uninitialized value" errors. To appease Perl, I am forced to test each variable to see if it's undefined and set each variable to an empty string if it is.

Are there any suggestions out there for an idiom for avoiding this annoyance without turning the warnings off?

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In reply to Idiom for setting variables to empty string if capture is undefined? by nysus

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